Unit 1 Topic 2 The population in developing countries is growing faster.SectionA课件（16张PPT）

课件16张PPT。偃师市实验中学 赵丽娜Unit 2 Saving the Earth
Topic 1 Pollution has caused too many problems.
Section AThere are several chemical
factories pouring waste water
into the stream.有几家化工厂正在往小溪里排放废水。 There be…doing sth…
……有……在做某事e.g. There are some people waiting for the bus at the bus stop.2 Work in pairs. Look at the pictures and make up conversations similar to the example with your partner.Example:
A: There were lots of flowers and grass
when I visited the village last year.
B: But now the flowers and grass have
gone.
A: What has happened here?
B: The villagers have destroyed them.lake/fish
factory/
pollutehill/ trees
farmers/cut downvillage/flowers and grass
villagers/destroy1b Listen to 1a and mark the words with P (Past) or N (Now).
____ beautiful ____ butterflies ____ dirty
____ grass ____ terrible ____ factory
____ bees ____ fresh ____ clean
____waste waterPPNPNNPPPN1c Read 1a and complete the sentences in the table. beautiful placelots of flowers and grassfresh and the water was cleanbees and butterflies dancingThe flowers and grassso dirtyterriblechemical factorieswaste waterEverythingTry to retell 1a. You can use the key words and the two pictures below :

beautiful, fresh, blue, clean, now, gone, dirty, terrible, waste water 3 A. Listen to the sentences and number the pictures.532146Exercises单项选择
( ) 1. Look! There are some boys ________ on the playground.
A. play football B. are playing football
C. playing football D. plays football
( ) 2. — I’m sorry I can’t go shopping with you. I am ill.
— ________
A. What a mess! B. What a shame!
C. What a pity! D. B and C
( ) 3. — Don’t ________ water. We must save every drop of it.
— Sorry, I won’t do it again.
A. waste B. throw
C. play D. leave
CDAExercises用所给动词的适当形式填空。
1. When I entered the room, I saw Maria ________ (read) a
Chinese book.
2. What a shame! The flowers and trees in the park _________
(go).
3. Everything _____________ (change) in the past few years.
4. Pandas don’t have enough bamboos ________ (eat) now
because of the pollution.
5. — Where have they been?
— They __________ (be) to the Great Wall. They _______
(have) a good time there the day before yesterday.readinghave gonehas changedto eathave beenhadsummaryWe learn:1. Express exclamation:
What a mess! What a shame!
2. Know the differences between Simple Past
and Present perfect.
It was a beautiful place.
Everything has changed.We can:1. Some words:
bee, butterfly, mess, shame, several, pour, waste,
destroy, pollute, goodness
2. Some phrases:
see sb. doing sth. pour…into..
3. Some sentences:
There are…doing… Homework
1. Read 1a.
2. Write a passage according to Part 4.
3. Finish Section A in your workbook.
4. Preview Section B.
Thank you.